Overgrown Battlement Combos
Overgrown Battlement + Singing Bell Strike
Overgrown Battlement + Staff of Domination
Combo result
Infinite green mana. Infinite lifegain. Infinite lifegain triggers. Infinite card draw. Infinite draw triggers. Infinite untap of creatures you control.
Prerequisites
All permanents on the battlefield. You control at least five creatures with defender. Overgrown Battlement does not have summoning sickness.